US1708199A - Ophthalmic mounting - Google Patents

Description

April 9, 1929. w, WEL H 1,708,199

OPHTHALMI C MOUNT ING Filed May 21, 1925 A TTORNE Y Patented Apr. 9, 1929.

UNITED STATES PATENT OFFICE.

JAMES WILSON WELSH, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO BAUSCH AND LOMB OPTICAL COMPANY, YORK.

OF ROCHESTER, NEW YORK, A CORPORATION OF NEW OPHTHALMIC MOUNTING.

The present invention relates to ophthalmic mountings, and more particularly to split-rim, spectacles in which provision is made for removing the temple without dislodging the lens and removing the lens withoutdisplacing the temple. From a more limited aspect, the invention relates to spectacles having double-ear temples and temple connections for the same. The more important features of novelty of the present invention are claimed in a divisional application, Serial No. 137,466, filed September 24, 1926. The claims of the present application are restricted to subsidiary features of novelty. V

Single-ear temples are mounted in place by simply pivoting the ear of the temple between two ears provided upon one or more end pieces,one end piece in mountings of the rimless type and two separate end pieces in mountings having split, lens-holding rims. Temples having a plurality of ears are not so easily manipulated, particularly with mountings of the split-rim type. One of the advantages of a double-ear temple is the increased. bearing surface provided by the additional temple ear; and it is not easy to design split-rim end pieces provided with sufficient bearing surface to cooperate efiiciently with the bearing surfaces of the temple ears. Split-rim end pieces, furthermore, have a tendency to loosen, thereby weakenin the tension upon the cooperating bearing surfaces of the temple and the endpiece ears.

It is therefore an object of the present invention to improve upon ophthalmic mountings of the above-described character. Other and further objects will be explained hereinafter and will be particularly pointed out in the appended claims.

Vith these ends in view, a feature of the invention contemplates a novel, double-ear, temple joint that shall be cheap to manu facture, rugged, simple, attractive, and not easily loosened, but of such nature that the temple may be pivoted to one only of the split-rim end. pieces. The difficulties attendant upon the use of multiple-ear temples in split joints are thus eliminated, and a superior joint is nevertheless provided. The invention is, however, equally applicable to single-ear joints.

With these d o her o j n View, the

. temple of I latter of the ears 3, 5 and 7 of the Application filed May 21, 1225. Serial No. 31,739.

nature of which will appear hereinafter, the invention consists of the improved ophthalmic mounting hereinafter described, illustrated in the accompanying drawings, and defined in the appended claims.

In the accompanying drawings, Fig. 1

is a fragmentary section taken longitudinally through the end pieces and the a pair of spectacles constructed according to the present invention; Fig. 2 a perspective view of the said end pieces, assembled; Figs. 3 and 4 are similar views, respectively, of the end pieces shown in Fig. 2, detached.

The illustrated temple 12 is provided with two flattened pivot cars 11, each provided with an eye ll. The split, lens-holding rim 2 is provided with end pieces 4 and (3, the which is longer than the former and is provided with three end-piece ears, 3, 5 and 7. The ear 3 is provided with a threaded eye 18, and the ears 5 and 7 with unthreaded eyes 15 and 17, the latter of which is countersunk. The temple cars 11 are inserted between adjacent end- piece ears 3, 5 and 7, the end-piece ears and the temple ears becoming thus alternately disposed. The temple is then pivotally secured in place upon the end piece 6 by a screw or other pintle lo thatextcnds through the eyes 13, 14,15 and 17. The screw 16 is provided with an enlarged head that is seated in the countersunk eye 17, and with a terminally threaded portion that is threaded in the eye 13. If desired, a bearing sleeve (not shown) may be slipped on the screw 16, but the temple may pivot about the screw itself as a bearing. Toremove the temple, or to remount it, all that is necessary is to manipulate the screw 16. E The pivotal movement of the temple is limited by projecting points 2-1 provided upon the cars 11 and adapted to engage limiting walls 26 that are provided between end piece 6. During such pivotal movement, the bearing faces of the temple ears 11 bear frictionally against the bearing faces 28 of the end- piece ears 3, 5 and 7. In order that the'bearing faces 28 may contact smoothly with, and press with uniform tension upon, the bearing faces of the temple ears 11, the thickness of the temple ears 11 should be equal to, or very slightly less than, the distance between the end-piece ears, So constructed, the temple the side face 45.

' vide d that joins the side faces and 37.

will not swing loosely. It will remain'in any position thatit may happen to occupy, but it is readily freely movable to any other position between its limits of movement.

The end pieces 4 and 6 are secured together by a screw 20 to maintain a lens 22 in position'within the split rim. The end piece l is provided with an outer face 31, aninner face 33, and two side faces 35 and 37, connecting the faces 31 and 33. The end piece 6 is similarly provided with an outer face 39, an inner face il, and two side faces4-3 and 45, connecting the faces 39 and all. The longer end piece (3 is reduced in thickness to provide a recess l7 that extends'into the outer face 39 transversely across the width of the end piece, from the side face l3 to The shorter end piece d is equal in length to the length of the recess and is so shaped as to be received in the recess, with its inner face 33 in contact with the bottom wall of the vrecess l7. The Wall 53 of the recess formsa shoulder that extends transversely in the direction of the thickness of the end piece 6. The end piece l is prowith a correspondingly disposed shoulder for engaging the shoulder 53. The screw 2.0 extends through the outer and inner faces 31 and 33 of the end piece 4 and through the bottom wall of the recess 4:7 and the inner face 41 of the end piece 6. The shoulder 55 is constituted of an end face The end piece 6 is provided with a transversely disposed projection 49 that extends up from the bottom wall of the recess 47, and the end piece 4; is provided with-a corresponding transversely disposed notch 51 within which the projection 49' is seated. Relative twisting movement of the end pieces 4; and 6 is thus prevented, and the danger that would otherwise exist of chipping the lens 22 at the junction 63 between the end pieces is eliminated.

Modifications within the spirit of the invention will obviously occur topersons skilled in the art, and all such are intended to beincluded within the scope of the appended claims.

\Vhat is claimed is:

1. An ophthalmic mounting having, in'

combination, two end pieces, one of which is reduced in thickness to provide a recess for receiving the other end piec'e,-one of the end pieces being "PEO'VlClGCl with a transversely disposed iirojection, and the other end piece being provided with atransv'ersely disposed 'notclrwithin which the projection is seated to prevent relative twisting of the end pieces, and means for securing the end pieces together. V

QQAn ophthalmic mounting having, in combination, two end pieces of different i length, the longer end piece being reduced in thickness a distance substantiallyequal notch to prevent relative twisting of the end 7 pieces, and means for securing the end pieces together.

3. An ophthahnic mounting having, in combination, two end pieces of different length, the longer end piece being reduced in thickness a distance substantially equal to the length of the shorter end piece to provide a recess for receiving the shorter end piece, the reduction in thicknessextending transversely across the longer end piece throughout its width to provide shoulder extending transversely substantially in the direction of the thickness of the longer end piece, the shorter end piece being profided with .a correspondingly disposed shoulder for engaging thetirst-named shoulder, one

of the end pieces being prov'ided'with' a transversely disposed notch and the other end piece being provided with a transversely disposed projection seated in the notch to prevent relative twisting of the end pieces, and a screw extending through the end pieces for securing the end aiecestogether. '4. An ophthalmic mounting having, in combination, a split lens rim having two end pieces of ditferent length, the portion of the longer end piece adjacent to the rim being reduced in thickness a distance substantially equal to the length of the shorter end piece to provide a recess for receiving the shorter end piece, one of the end pieces being provided with a transversely disposed ingof the end-pieces, a screw extending through the end pieces for securing the end oieces together, and atemple'pivoted to the longer end piece. a

5; An ophthalmic mounting having, in combination, a split lens rim having two end pieces one of which is reduced in thickness to receivethe' other end piece, one-of the end pieces being provided with a transversely disposed notch and the other end piece being provided with a-"transverselv disposed projection seated in the notch td prevent relative twisting of the end pieces, one of the end pieces being provided with more than two cars, a temple provided' with one ear less than the number ,ofend-piece ears, the end-piece ears and the temple ears being alternately disposed, and a pintl e extending through the temple ears and the end-piece ears, whereby the temple is pivoted to the end piece that is provided with ears.

6. An ophthalmic mounting having, in combination, a split lens rim having two end pieces of different lengths, the port-ion of the longer end piece adjacent to the rim being reduced in thickness at distance substantially equal to the length of the shorter end piece to provide a recess for receiving the shorter end piece, the reduction in thick ness extending transversely across the longer end piece throughout its width to provide a shoulder extending transversely substantially in the direction of the thickness of the longer end piece, the shorter end piece being provided with a correspondingly disposed shoulder ;t'or engaging the first-named shoulder, the unreduced portion of the longer end piece being provided with more than two ears, one of the end pieces being provided with a transversely disposed notch and the other end piece being provided with a transversely disposed projection seated in the notch to prevent relative twisting of the end pieces, means for securing the end pieces together, a temple provided with one ear less than the number of end-piece ears, the endpiece and temple ears being alternately disposed, and a pintle extending through the temple and the end-piece ears, whereby the temple is pivoted to the longer end piece.

In testimony whereof, I have hereunto subscribed my name.

JAMES \V. VELSI-I.

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